package com.ny.demo530;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Scanner;

public class DeleteDemo {
    private static final String URL = "jdbc:mysql://localhost:3306/userdb";
    private static final String username = "root";
    private static final String password = "123456";
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection(URL, username, password);
        String sql = "delete from user where id = ?";
        PreparedStatement preparedStatement = connection.prepareStatement(sql);

        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入ID");

        int id = scanner.nextInt();

        preparedStatement.setInt(1, id);

       int i = preparedStatement.executeUpdate();
        if (i>0) {
            System.out.println("删除成功");
        } else {
            System.out.println("删除失败");
        }
    }

}
